I've found that setting a shortcut Win+Space to switch the keyboard layout doesn't work. In Settings->Keyboard->Layouts->Option->Switching to another layout, you can set your desired shortcut. Some work, but my preferred shortcut (Win+Space) doesn't work (nothing happens). I have 2 layouts setup so I'd expect the shortcut to switch layouts between the two (as it does for another shortcut, e.g. Right Ctrl + Right Shift, which does work).